Item # CROCHTSIA00730XXX, Type IA Cross Recessed Oval Countersunk Head Tapping Screw, with 0.070" Recess Dia. On Sales Systems Ltd.

Applicable to screw types as indicated by code symbols.

Type AB thread forming.
Type A thread forming, except for short lengths.
Types B and BP thread forming and Types BF and BT thread cutting.

Screw sizes No. 0 and No. 1 are impractical to gage.

This type of recess has a large center opening, wide straight wings, and blunt bottom, with all edges relieved or rounded.

Unit of Measure

Manufacturer | Specifications | Codes and Standards

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product	N/A Tapping Screws
Unit of Measure	N/A English
Type	N/A Type IA
Nominal Size or Basic Screw Dia.	N/A No. 1
Nominal Size or Basic Screw Dia. (Decimal)	N/A 0.0730 in
Applicable to Screw Types¹	N/A 1 2 3
Ref. Recess Dia. (M)	N/A 0.070 in
Ref. Recess Depth (T)	N/A 0.043 in
Ref. Recess Width (N)	N/A 0.018 in
Driver Size	N/A 0
Max. Recess Penetration Gaging Depth	N/A 0.043 in
Min. Recess Penetration Gaging Depth	N/A 0.027 in

Codes and Standards

N/A Abstract of ASME B18.6.4 1998

¹ 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square

Manufacturer

Manufacturer

Specifications

Product

Unit of Measure

Type

Nominal Size or Basic Screw Dia.

Nominal Size or Basic Screw Dia. (Decimal)

Ref. Recess Dia. (M)

Ref. Recess Depth (T)

Ref. Recess Width (N)

Driver Size

Max. Recess Penetration Gaging Depth

Min. Recess Penetration Gaging Depth

Codes and Standards

Codes and Standards